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Kollmorgen S7240S-NANANA
Overview:
The S7240S-NANANA is a high-power single-axis servo drive from the Kollmorgen S700 family. The model code decodes as: S7 (S700 Series) + 240 (240 VAC nominal) + S (Single-axis) + NANANA (No options — base configuration with no line filter, no braking transistor, no special communication module, no safety add-on). This is the standard, fully-featured base drive without any factory-installed options, intended for OEMs who want to configure the drive with only what they need.
Detailed content
Key Specifications:
| Parameter | Value |
|---|---|
| Input Voltage | 200–240 VAC (1-Phase or 3-Phase) |
| Continuous Output Current | 40 A RMS |
| Peak Output Current | 120 A (3 seconds) |
| Continuous Power Rating | ~8.5 kW (at 240 VAC, 40 A) |
| DC Bus Voltage | ~340 VDC (nominal), 565 VDC max |
| Servo Update Rate | 20 kHz (current loop) |
| Communication | EtherCAT (primary), CANopen, RS-232 |
| Feedback Support | EnDat 2.2, Hiperface DSL, BiSS-C, SSI, Incremental (A/B/Z) |
| Safety Functions | STO, SS1, SLS, SLP, SOS (integrated — even in NANANA) |
| Enclosure Rating | IP20 (chassis mount) |
| Dimensions (W×H×D) | Approximately 210 × 320 × 250 mm |
| Weight | Approximately 5.5 kg |
Structural Features:
- Large chassis-mount format with integrated heat sink and forced-air fan
- Screw terminal blocks: 3-phase power input, motor output (U/V/W + PE), encoder, brake, I/O
- Dual EtherCAT ports (daisy-chain capability)
- CANopen connector (RJ45)
- 8 digital inputs / 4 digital outputs (24 VDC, opto-isolated)
- 2 analog inputs (0–10 V, 16-bit)
- 1 analog output (0–10 V, 12-bit)
- LED status: Power, Ready, Fault, Warning
- Conformal-coated PCB
Working Principle:
The S7240S uses a space-vector modulation (SVM) three-phase inverter with field-oriented control (FOC). The 20 kHz current loop independently regulates torque (q-axis) and flux (d-axis) currents. The velocity loop runs at 1 kHz, and the position loop at 1 kHz, all synchronized to the EtherCAT distributed clock for multi-axis coordination. The drive supports auto-tuning of motor parameters (resistance, inductance, back-EMF, inertia) via the Kollmorgen Automation Suite software. Even in the “NANANA” (no options) configuration, the drive includes the STO safety function, which uses a dual-channel hardware circuit to remove torque-producing current within 5 ms when triggered.
Advantages:
- 40 A continuous / 120 A peak — handles large motors and high-inertia loads
- 20 kHz current loop — best-in-class torque bandwidth for this power class
- EtherCAT native — deterministic multi-axis motion with <1 μs jitter
- NANANA = no options = lower cost — OEM pays only for what is needed
- Integrated safety (STO, SS1, SLS, SLP, SOS) — no external safety relay in most applications
- Auto-tuning — commissioning time reduced by up to 70%
Applicable Industries:
Large CNC machines, injection molding, metal forming presses, printing presses (wide web), packaging (large format), robotics (high-payload arms), wind turbine pitch and yaw drives, heavy conveyor systems.
Installation Requirements:
- Mount with minimum 100 mm clearance on all sides (forced-air cooling requires airflow)
- Use 4-wire shielded cable for motor (U/V/W + PE), minimum 10 AWG (6 mm²)
- Encoder cable: shielded twisted pair, max 50 m (EnDat/Hiperface), max 25 m (incremental)
- Connect all digital I/O with 24 VDC — do not exceed 30 VDC
- Ground chassis to protective earth (PE) with minimum 6 AWG (16 mm²) wire
- For 1-phase 200 VAC input: maximum input current is 48 A — verify supply capacity
Usage Precautions:
- Derate output current by 1% per °C above 35°C ambient — at 45°C ambient, maximum continuous current is 30 A (not 40 A)
- The “NANANA” configuration has no internal braking transistor — an external braking resistor (B-604/B-606 series) or brake chopper (B-204) must be connected for any application with deceleration or overhauling loads
- Enable STO before any mechanical work on the motor or load
- Do not block the internal fan — thermal shutdown occurs at 85°C heatsink temperature
- For peak current operation (120 A), limit duration to 3 seconds maximum with 60 seconds cool-down between peaks
